Tube.



T. F. SANBORN.

TUBE.

APPLICATION FILED JULY 24,1911'.

Patented May 28 use wherever a tube or having novel means UNITED STATESVrATlnsfT if THORNTON rf sA'NBOnN, or ENSENADA, PORTO RICO.

' TUBE.

To. allk 'whom t may concern:

'Be -'t known that I, THORNTON F. SN- BORN, a citizen of the UnitedStates, resid'- ling atfEnsenada, Porto Rico, khave invented certam newlandv yuseful Improvementsin QTubes, fof Which-the following is 'aspecification. f

This inl ention relates to tubes.

vThe present. invention, ywhile adapted for ipe is employed, isparticularly 'designed oruse in connection with the evaporatingapparatusset forth in my application, Serial No. 599,773, and has for its objectthe `provision of ka pipe whereby it may be secured in position. f

In the evaporatingiapparatus'set forth i'n my aforesaid application, thetake-olf tubes o r pipes through which the non-condensible gasesarerremoved from theheating tubes,

are relatively. long and of relatively small diameter, and as they areused in large num'-` bers, their HVsecur'ement in position is quitetedious. I have heretoforeproposed to expand theminto a head of theevaporating cell. In the present `invention lthese tubes` or pipes areprovided with external screw threads of. greater .diameter l than thetube or pipe itself and with suitable means .for

30. turning the tube or pipe -in screwing itinto position or removing itfrom j the head whereby the securement of the tubes or pipes may berapidly and easily performed.

-I wish itunderstood, however,wthat the present invention is'not limitedto tubes or ipes of the character set forth, as -itmay e used on othertubes orpipes, although it is particularly and vpeculiarly useful inconA nection with the, evaporating apparatus, as

abo ve set forth. In the accompanying drawings: Figure 1 is a sectionthrough au partofthe-evaporating apparatus set forth lin my aforesaidapplication, illustrating tubes constructed in accordance -with thepresent invention, in

position; 4Fig. 2, a longitudinalxsection through one of the tubes; andFigs. l3', 4 and 5, detail views of some of the different endconstructions forthe tubes.

rA part of an evaporating. 'ap aratus is shown vat 1 as' providedwith tue sheet 2A and head 3, defining a steam chamber 5' and a chamber 8. Theout-let forthe cell 1 is shown at 10 'and the heating tubes at 4.

The outlet for .the chamber 8 is desig vtube can .be v ery quicklyandeasily f 2. .A tube or pipe provlded with an Out- Theforegoing'construction the same as" shownjin my-4 copen'ding applicationon -eyaporatingv apparatus, and .1n that application there. are showntake-off tubes or pipes 13. These .tubes or pipes, in said application,are" expanded into the head2, and the present invention relates to vanimproved means of connecting them to. the head 3. The tubes 13, in anevaporating apparatus, such -as set forth in my aforesaid applicar.

Specification of Letters Patent. i .Patenlfd May 28,1912, .A 1 i 1Application filed July 24, 1911. Serial No.`640,351. I I

tion, are very numerous, of considerablef length, and of relativelysmall 'diameter.

It is an expensive andtedious operation to expand these tubes into vthehead 3. To

obviate this, I providethe .tubes with ex" 4ternal screw threads- 9which are formed by first forcing outwardly. or expanding thel tubewhere the threadsare to Abeplaced and then externally'threading the'expanded por; tion so that the-threads appear on an en! larged part ofthe tube.. Tubes of the character indicated have their walls of suicientthicknessto insure a proper rigidityof-.the tube despite its relativevgreat jlength and this-thickness of the wall ofxt'heftube permits .itsexpansion and subsequent external threading. The screw-threaded. part`is of' 'relatively short length-anden account of its being of greaterdiameter thanthe tube, ths

asse

through ,the screw-threaded opening-1n the y engaged therewith. Y l

- To facilitate the turning'ofl the tube, its

`lower end may be provided with a polygonal exterior; 15 shown in sideand end views,

Fig. 3'; or, the-lower end .ofthetube may be notched as at 16, Fig. 4;or, a squared part17 may be employed as shown in Fig. 5.

Other formations than those shown in Figs. 3, ,4, and 5, may-be employedas any 1. A tube Orfpipe'provided with an out-`- of greaterdiameter'than the wardly expanding parthaving anexternal screw-threadwardly expanding part having "an external screw-thread of greaterdiameter than the 'head 3 and the screw-threaded part 9 then A secure bytube, said tube being provided with tool` V engaging means.

3. A tube or pipe provided-near oneend In testimony whereof, hereuntoaix my with an outwardly' expanding part having signature in presence oftwo witnesses.

\ an external screw-thread of greater diame- -ter than the tube andhaving its end, ad- THORNTON F SANBORN jacent Said screw-threaded part,provided Witnesses:

'with tool engaging means whereby the tube S. V. Looxwoon,

may be readlly screwed into position. WM. F. A sHI'oN.

